PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-06:57:20
G02     211.7          58.4                6.1 +/-    0.49       7.0 +/-    0.49  0.070 / 0.100
G06     74.2           77.7                4.2 +/-    0.39       4.3 +/-    0.39  0.090 / 0.090
G12     316.8          33.4                1.9 +/-    1.28       3.0 +/-    1.28  0.040 / 0.040
G17     53.6           34.3                4.3 +/-    1.84       6.8 +/-    1.84  0.040 / 0.040
G19     35.9           50.5                3.2 +/-    1.27       4.0 +/-    1.27  0.080 / 0.170
G24     273.1          41.5                6.7 +/-    2.82       9.6 +/-    2.82  0.080 / 0.240
G28     116.4          25.2                7.0 +/-    1.79      13.5 +/-    1.79  0.070 / 0.060