PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-16:57:50
G08     277.1          22.1                7.5 +/-    1.31      15.7 +/-    1.31  0.090 / 0.140
G10     43.5           60.4                8.7 +/-    1.24       9.8 +/-    1.24  0.080 / 0.170
G14     243.7          54.8                8.9 +/-    2.61      10.6 +/-    2.61  0.080 / 0.090
G20     86.5           40.4                7.8 +/-    1.40      11.2 +/-    1.40  0.050 / 0.090
G21     152.5          25.0                8.4 +/-    3.49      16.5 +/-    3.49  0.140 / 0.190
G24     45.8           18.2                5.6 +/-    2.27      12.9 +/-    2.27  0.110 / 0.200
G27     239.9          23.5                9.9 +/-    1.62      19.9 +/-    1.62  0.250 / 0.320
G31     180.9          19.0               10.8 +/-    2.72      24.4 +/-    2.72  0.300 / 0.350
G32     300.3          77.2                8.1 +/-    0.59       8.3 +/-    0.59  0.030 / 0.030