PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-11:58:00
G01     320.7          12.6                3.1 +/-    2.16       8.3 +/-    2.16  0.050 / 0.060
G08     267.9          15.9                6.2 +/-    2.49      15.1 +/-    2.49  0.050 / 0.060
G10     69.1           56.7                4.7 +/-    0.88       5.5 +/-    0.88  0.120 / 0.230
G11     309.9          18.1                3.7 +/-    2.02       8.6 +/-    2.02  0.130 / 0.240
G14     273.0          66.0                4.3 +/-    0.79       4.7 +/-    0.79  0.160 / 0.480
G18     310.2          34.5                4.8 +/-    1.92       7.6 +/-    1.92  0.140 / 0.390
G21     155.0          10.4                4.9 +/-    2.06      13.6 +/-    2.06  0.170 / 0.510
G27     227.9          12.6                4.3 +/-    4.95      11.3 +/-    4.95  0.170 / 0.430
G31     176.1          36.6                7.7 +/-    0.98      11.9 +/-    0.98  0.030 / 0.040
G32     357.2          71.0                4.6 +/-    0.69       4.8 +/-    0.69  0.030 / 0.030