PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-08:28:30
G10     245.6          21.9                5.3 +/-    2.53      11.1 +/-    2.53  0.080 / 0.340
G13     60.2           33.5                3.8 +/-    0.83       6.2 +/-    0.83  0.090 / 0.300
G15     96.9           57.2                7.0 +/-    0.48       8.2 +/-    0.48  0.030 / 0.050
G16     302.2          15.1                1.8 +/-    2.78       4.5 +/-    2.78  0.050 / 0.040
G20     19.4           66.8                3.7 +/-    0.44       4.0 +/-    0.44  0.050 / 0.040
G21     327.6          56.7                4.2 +/-    0.54       4.9 +/-    0.54  0.040 / 0.020
G26     273.1          17.8                5.7 +/-    1.80      13.3 +/-    1.80  0.100 / 0.180
G29     162.6          56.3                6.2 +/-    0.66       7.3 +/-    0.66  0.080 / 0.100