PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-10:57:50
G01     80.2           33.2                3.5 +/-    0.68       5.8 +/-    0.68  0.030 / 0.030
G07     132.4          37.4                5.3 +/-    0.64       8.1 +/-    0.64  0.030 / 0.030
G11     58.9           34.8                2.1 +/-    0.54       3.3 +/-    0.54  0.070 / 0.230
G13     284.1          38.0                3.5 +/-    1.21       5.3 +/-    1.21  0.090 / 0.240
G17     222.0          63.5                5.1 +/-    1.18       5.6 +/-    1.18  0.050 / 0.080
G18     54.5           20.8                1.9 +/-    1.05       4.2 +/-    1.05  0.040 / 0.090
G19     219.0          30.2                5.4 +/-    1.30       9.4 +/-    1.30  0.090 / 0.110
G28     3.4            61.0                3.7 +/-    0.55       4.2 +/-    0.55  0.080 / 0.100
G30     124.3          71.0                5.2 +/-    0.72       5.5 +/-    0.72  0.070 / 0.150