PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-21:12:40
G02     59.2           34.0                8.9 +/-    0.54      14.3 +/-    0.54  0.140 / 0.360
G05     60.8           64.7               11.1 +/-    0.70      12.2 +/-    0.70  0.180 / 0.300
G12     184.5          30.7               12.7 +/-    1.19      21.9 +/-    1.19  0.070 / 0.100
G13     129.0          15.8               14.2 +/-    2.19      34.7 +/-    2.19  0.040 / 0.100
G15     164.4          11.9               16.4 +/-    1.82      43.9 +/-    1.82  0.040 / 0.070
G20     207.4          62.6               14.3 +/-    0.59      15.9 +/-    0.59  0.040 / 0.070
G21     271.9          18.2               12.2 +/-    2.12      28.2 +/-    2.12  0.030 / 0.050
G25     227.7          49.9               13.7 +/-    0.56      17.3 +/-    0.56  0.040 / 0.040
G29     330.9          58.0                9.9 +/-    0.93      11.5 +/-    0.93  0.040 / 0.040