PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-10:27:40
G01     320.7          12.6                2.7 +/-    4.11       7.0 +/-    4.11  0.040 / 0.060
G08     267.0          15.9                6.8 +/-    1.61      16.4 +/-    1.61  0.040 / 0.070
G10     69.2           56.6                4.3 +/-    0.76       5.0 +/-    0.76  0.220 / 0.510
G11     309.5          18.6                4.5 +/-    1.28      10.2 +/-    1.28  0.130 / 0.420
G14     271.7          65.4                3.9 +/-    0.71       4.3 +/-    0.71  0.120 / 0.250
G18     310.1          34.6                5.5 +/-    2.15       8.8 +/-    2.15  0.120 / 0.190
G21     155.3          10.9                3.3 +/-    1.76       9.0 +/-    1.76  0.030 / 0.040
G27     228.0          12.6                2.8 +/-   14.97       7.5 +/-   14.97  0.030 / 0.040
G31     175.8          36.9                7.4 +/-    1.43      11.4 +/-    1.43  0.200 / 0.320
G32     358.0          70.9                5.3 +/-    0.78       5.6 +/-    0.78  0.180 / 0.280