PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-11:28:00
G08     301.4          20.4                4.1 +/-    1.44       8.9 +/-    1.44  0.050 / 0.120
G10     357.4          62.7                3.6 +/-    0.60       4.0 +/-    0.60  0.060 / 0.080
G14     226.4          40.0                5.6 +/-    1.66       8.1 +/-    1.66  0.040 / 0.040
G20     90.8           9.5                 4.4 +/-    3.22      12.3 +/-    3.22  0.040 / 0.060
G21     144.0          43.5                6.2 +/-    0.74       8.5 +/-    0.74  0.070 / 0.080
G24     60.4           27.5                3.4 +/-    0.95       6.2 +/-    0.95  0.070 / 0.100
G27     258.1          33.5                5.6 +/-    2.72       9.1 +/-    2.72  0.170 / 0.380
G32     239.4          65.6                5.6 +/-    0.73       6.1 +/-    0.73  0.210 / 0.510