PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-23:12:50
G05     48.5           17.7                6.2 +/-    0.36      14.3 +/-    0.36  0.080 / 0.140
G10     235.5          11.7               12.6 +/-    2.22      33.9 +/-    2.22  0.070 / 0.130
G13     76.9           36.4                8.8 +/-    0.72      13.6 +/-    0.72  0.120 / 0.310
G15     130.2          51.2               10.1 +/-    0.66      12.6 +/-    0.66  0.090 / 0.330
G16     313.8          13.0                8.1 +/-    1.46      21.2 +/-    1.46  0.140 / 0.300
G20     242.3          16.5                7.8 +/-    0.99      18.7 +/-    0.99  0.120 / 0.350
G21     311.4          45.5                7.9 +/-    1.20      10.5 +/-    1.20  0.220 / 0.290
G25     199.5          11.5               11.0 +/-    3.12      29.7 +/-    3.12  0.280 / 0.450
G26     286.9          21.0                8.4 +/-    1.42      18.0 +/-    1.42  0.050 / 0.070
G29     155.4          74.9                9.2 +/-    0.92       9.5 +/-    0.92  0.070 / 0.080