PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-10:58:00
G08     319.8          11.3               -2.2 +/-   24.05      -5.9 +/-   24.05  0.310 / 0.560
G10     313.2          56.2                2.6 +/-    1.47       3.1 +/-    1.47  0.200 / 0.500
G14     213.9          19.1                4.9 +/-    0.90      11.1 +/-    0.90  0.040 / 0.060
G15     45.6           17.9                3.3 +/-    2.07       7.6 +/-    2.07  0.040 / 0.070
G20     74.7           21.3                4.2 +/-    1.88       8.8 +/-    1.88  0.110 / 0.230
G21     121.6          65.1                6.7 +/-    0.61       7.3 +/-    0.61  0.080 / 0.180
G24     86.3           29.6                6.8 +/-    1.76      12.0 +/-    1.76  0.030 / 0.040
G27     287.1          37.6                5.8 +/-    2.28       8.9 +/-    2.28  0.030 / 0.030
G32     215.9          43.5                5.6 +/-    0.82       7.7 +/-    0.82  0.090 / 0.090