PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-03:58:00
G01     86.0           32.5                5.7 +/-    0.94       9.5 +/-    0.94  0.050 / 0.080
G07     128.8          39.9                6.6 +/-    0.39       9.7 +/-    0.39  0.050 / 0.070
G11     62.9           37.2                2.9 +/-    0.70       4.5 +/-    0.70  0.040 / 0.070
G13     290.0          37.4                4.0 +/-    1.56       6.1 +/-    1.56  0.040 / 0.060
G15     313.8          10.7               -4.3 +/-   15.33     -11.8 +/-   15.33  0.090 / 0.290
G17     216.4          60.0                7.2 +/-    1.08       8.1 +/-    1.08  0.090 / 0.220
G18     56.9           21.1                1.7 +/-    1.97       3.6 +/-    1.97  0.080 / 0.110
G19     216.1          28.5                6.8 +/-    2.64      12.3 +/-    2.64  0.090 / 0.110
G28     350.9          61.7                2.9 +/-    0.90       3.2 +/-    0.90  0.030 / 0.030
G30     113.2          74.8                5.0 +/-    0.98       5.1 +/-    0.98  0.030 / 0.040