PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-04:42:50
G01     86.0           32.5                3.5 +/-    0.78       5.9 +/-    0.78  0.060 / 0.060
G07     128.7          40.2                6.6 +/-    0.52       9.6 +/-    0.52  0.070 / 0.070
G11     63.0           37.2                5.2 +/-    1.12       7.9 +/-    1.12  0.080 / 0.100
G13     290.1          37.4                3.7 +/-    4.10       5.6 +/-    4.10  0.090 / 0.100
G15     314.0          10.4               -9.4 +/-    3.94     -26.0 +/-    3.94  0.140 / 0.160
G17     216.4          60.0                8.6 +/-    1.15       9.8 +/-    1.15  0.090 / 0.240
G18     57.2           21.2                3.7 +/-    2.04       7.9 +/-    2.04  0.040 / 0.040
G19     216.1          28.2                6.4 +/-    1.36      11.6 +/-    1.36  0.030 / 0.050
G28     351.2          61.7                4.4 +/-    0.38       4.9 +/-    0.38  0.020 / 0.030
G30     113.0          75.0                6.7 +/-    0.92       6.9 +/-    0.92  0.030 / 0.020