PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-09:27:50
G10     296.1          51.2                5.0 +/-    0.94       6.2 +/-    0.94  0.050 / 0.080
G15     46.1           27.8                3.6 +/-    1.40       6.6 +/-    1.40  0.060 / 0.100
G20     61.3           36.5                5.0 +/-    0.57       7.7 +/-    0.57  0.060 / 0.070
G21     95.5           73.9                6.9 +/-    0.93       7.1 +/-    0.93  0.070 / 0.100
G24     98.6           26.3                7.4 +/-    1.51      14.0 +/-    1.51  0.040 / 0.040
G27     300.4          34.4                6.5 +/-    1.04      10.5 +/-    1.04  0.040 / 0.040
G32     210.2          32.7                5.8 +/-    1.83       9.6 +/-    1.83  0.040 / 0.050