PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-21:12:30
G10     282.7          46.3                9.0 +/-    1.44      11.9 +/-    1.44  0.030 / 0.040
G15     51.1           42.7                8.5 +/-    0.71      11.9 +/-    0.71  0.030 / 0.040
G20     326.1          64.6                8.3 +/-    0.64       9.1 +/-    0.64  0.060 / 0.160
G21     51.2           77.1                9.0 +/-    0.43       9.2 +/-    0.43  0.070 / 0.100
G24     105.9          21.7               10.1 +/-    1.43      21.3 +/-    1.43  0.080 / 0.170
G27     311.3          27.5                6.6 +/-    2.47      12.3 +/-    2.47  0.090 / 0.190
G29     168.7          18.1               11.1 +/-    1.87      25.7 +/-    1.87  0.040 / 0.050
G32     206.6          22.4               12.5 +/-    1.61      26.0 +/-    1.61  0.030 / 0.050