PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/10-04:12:40
G01     109.5          24.0                8.1 +/-    1.24      16.2 +/-    1.24  0.030 / 0.030
G07     104.4          58.0                7.5 +/-    0.62       8.6 +/-    0.62  0.030 / 0.030
G08     41.7           20.0                3.3 +/-    0.61       7.3 +/-    0.61  0.050 / 0.070
G09     173.8          14.2                8.7 +/-    1.51      22.1 +/-    1.51  0.050 / 0.070
G11     90.1           42.4                8.0 +/-    0.34      11.2 +/-    0.34  0.070 / 0.190
G13     311.3          27.5                3.7 +/-    0.84       6.8 +/-    0.84  0.070 / 0.150
G17     203.6          37.9                7.4 +/-    0.93      11.1 +/-    0.93  0.040 / 0.060
G28     308.7          59.6                5.8 +/-    1.27       6.7 +/-    1.27  0.050 / 0.070
G30     6.5            76.1                6.2 +/-    0.68       6.4 +/-    0.68  0.030 / 0.050