PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-14:28:00
G10     275.5          44.3                6.8 +/-    1.48       9.3 +/-    1.48  0.130 / 0.180
G13     38.8           11.7                3.8 +/-    6.26      10.1 +/-    6.26  0.180 / 0.150
G15     51.4           39.9                4.2 +/-    1.17       6.1 +/-    1.17  0.080 / 0.050
G20     319.0          64.4                6.3 +/-    0.56       6.9 +/-    0.56  0.100 / 0.050
G21     27.6           75.2                5.4 +/-    1.03       5.5 +/-    1.03  0.150 / 0.150
G24     116.5          18.0               10.5 +/-    1.27      24.2 +/-    1.27  0.090 / 0.140
G27     315.3          24.1                4.0 +/-    1.76       7.9 +/-    1.76  0.050 / 0.030
G29     168.0          25.4                7.0 +/-    2.39      13.5 +/-    2.39  0.040 / 0.030
G32     204.5          16.7                6.4 +/-    1.13      15.3 +/-    1.13  0.620 / 0.630