PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-04:12:50
G01     75.1           33.2                5.2 +/-    0.46       8.6 +/-    0.46  0.050 / 0.090
G07     135.0          31.9                8.7 +/-    0.96      14.6 +/-    0.96  0.040 / 0.090
G11     55.0           32.0                3.3 +/-    0.72       5.5 +/-    0.72  0.070 / 0.220
G13     278.7          38.3                4.5 +/-    0.94       6.8 +/-    0.94  0.090 / 0.180
G15     306.7          13.7                1.4 +/-    1.98       3.6 +/-    1.98  0.080 / 0.140
G17     227.3          68.7                5.9 +/-    1.30       6.3 +/-    1.30  0.060 / 0.120
G18     49.1           17.6                1.8 +/-    1.26       4.3 +/-    1.26  0.030 / 0.060
G19     221.1          36.7                6.8 +/-    1.11      10.4 +/-    1.11  0.040 / 0.060
G28     8.1            60.7                3.5 +/-    0.29       3.9 +/-    0.29  0.030 / 0.030
G30     131.1          66.8                5.8 +/-    0.33       6.3 +/-    0.33  0.040 / 0.030