PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-15:12:50
G02     72.8           21.3                8.1 +/-    1.61      17.2 +/-    1.61  0.030 / 0.040
G05     46.4           48.0                8.2 +/-    0.36      10.6 +/-    0.36  0.030 / 0.050
G12     182.8          17.9               10.3 +/-    3.60      23.9 +/-    3.60  0.060 / 0.050
G13     116.4          25.5               14.0 +/-    1.05      27.0 +/-    1.05  0.040 / 0.040
G15     154.0          25.4               15.4 +/-    1.47      29.8 +/-    1.47  0.090 / 0.180
G18     223.3          15.8                8.7 +/-    2.47      21.2 +/-    2.47  0.110 / 0.160
G20     224.2          75.5               10.9 +/-    0.60      11.2 +/-    0.60  0.090 / 0.270
G21     285.8          30.2                8.6 +/-    1.54      15.1 +/-    1.54  0.120 / 0.230
G25     218.3          38.6                9.8 +/-    2.44      14.6 +/-    2.44  0.060 / 0.090
G29     351.1          75.4                7.9 +/-    0.41       8.2 +/-    0.41  0.060 / 0.090