PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-11:58:00
G01     319.8          16.7                4.8 +/-    0.99      11.4 +/-    0.99  0.120 / 0.250
G08     258.2          14.4                5.3 +/-    2.47      13.3 +/-    2.47  0.160 / 0.220
G10     77.1           53.3                4.6 +/-    0.92       5.6 +/-    0.92  0.050 / 0.040
G11     304.1          22.7                3.3 +/-    1.37       6.9 +/-    1.37  0.050 / 0.050
G14     292.3          70.9                5.0 +/-    0.50       5.3 +/-    0.50  0.050 / 0.040
G18     304.9          41.4                5.1 +/-    1.89       7.3 +/-    1.89  0.040 / 0.030
G20     103.8          30.3                5.2 +/-    0.84       9.0 +/-    0.84  0.030 / 0.020
G27     227.2          10.8                1.6 +/-   13.97       4.5 +/-   13.97  0.030 / 0.030
G31     178.0          38.0                6.1 +/-    0.88       9.2 +/-    0.88  0.260 / 0.390
G32     349.7          71.1                4.7 +/-    0.53       5.0 +/-    0.53  0.280 / 0.360