PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-19:12:30
G10     253.2          30.5               12.7 +/-    2.44      22.0 +/-    2.44  0.040 / 0.050
G13     50.4           27.0                6.7 +/-    3.19      12.5 +/-    3.19  0.050 / 0.050
G15     80.5           56.9                9.7 +/-    1.11      11.3 +/-    1.11  0.080 / 0.160
G16     292.3          15.7                8.1 +/-    2.69      19.8 +/-    2.69  0.080 / 0.210
G20     275.4          53.7               11.9 +/-    3.10      14.3 +/-    3.10  0.040 / 0.040
G21     337.1          61.5               10.9 +/-    0.68      12.2 +/-    0.68  0.030 / 0.040
G26     265.4          14.3               10.4 +/-    2.00      26.4 +/-    2.00  0.170 / 0.410
G29     164.5          47.5               11.9 +/-    1.17      15.4 +/-    1.17  0.220 / 0.350