PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-11:28:00
G07     36.6           69.6                4.4 +/-    0.62       4.7 +/-    0.62  0.030 / 0.030
G08     53.8           42.0                4.0 +/-    0.95       5.6 +/-    0.95  0.030 / 0.030
G09     176.8          39.6                6.6 +/-    1.03       9.7 +/-    1.03  0.030 / 0.030
G11     122.4          32.3                3.8 +/-    0.91       6.4 +/-    0.91  0.030 / 0.030
G17     199.0          10.8               -7.9 +/-    5.21     -21.8 +/-    5.21  0.230 / 0.200
G18     108.0          13.9                2.6 +/-    2.02       6.5 +/-    2.02  0.180 / 0.270
G23     160.7          12.8                2.7 +/-    1.36       7.1 +/-    1.36  0.260 / 0.130
G27     38.2           11.7                2.6 +/-    2.90       7.0 +/-    2.90  0.280 / 0.230
G28     268.0          49.8                4.7 +/-    4.05       5.9 +/-    4.05  0.170 / 0.370
G30     325.5          54.9                3.3 +/-    0.32       4.0 +/-    0.32  0.190 / 0.350