PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-04:42:50
G08     282.5          22.2                9.1 +/-    1.66      18.9 +/-    1.66  0.090 / 0.120
G10     31.5           62.4                6.7 +/-    0.42       7.5 +/-    0.42  0.090 / 0.180
G14     240.5          52.9                8.8 +/-    1.70      10.7 +/-    1.70  0.050 / 0.090
G18     317.1          18.8                5.6 +/-    0.84      12.8 +/-    0.84  0.040 / 0.070
G20     70.9           53.8               10.3 +/-    0.61      12.5 +/-    0.61  0.060 / 0.140
G21     151.3          30.4                8.9 +/-    1.48      15.4 +/-    1.48  0.060 / 0.130
G24     46.8           19.1                5.1 +/-    0.91      11.6 +/-    0.91  0.060 / 0.130
G27     243.7          25.4               11.0 +/-    2.57      21.2 +/-    2.57  0.080 / 0.160
G31     179.9          17.7                7.6 +/-    1.69      17.7 +/-    1.69  0.030 / 0.030
G32     283.5          76.2                7.4 +/-    0.67       7.6 +/-    0.67  0.030 / 0.030