PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-20:12:30
G10     252.6          30.0               10.8 +/-    2.12      19.0 +/-    2.12  0.040 / 0.040
G13     51.0           27.4                6.8 +/-    2.36      12.5 +/-    2.36  0.040 / 0.040
G15     83.4           57.7               10.5 +/-    0.85      12.1 +/-    0.85  0.100 / 0.180
G16     293.1          15.7                6.8 +/-    2.07      16.8 +/-    2.07  0.120 / 0.170
G20     274.1          52.9               11.4 +/-    3.44      13.9 +/-    3.44  0.030 / 0.040
G21     336.1          61.0                9.9 +/-    0.81      11.2 +/-    0.81  0.030 / 0.040
G26     266.0          14.6                8.9 +/-    1.75      22.4 +/-    1.75  0.120 / 0.350
G29     164.3          48.0               11.5 +/-    0.85      14.8 +/-    0.85  0.130 / 0.350