PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-21:12:30
G10     255.4          32.0               10.0 +/-    2.06      16.9 +/-    2.06  0.040 / 0.040
G13     48.6           25.5                8.3 +/-    2.04      16.0 +/-    2.04  0.040 / 0.040
G15     76.8           56.4                8.9 +/-    0.61      10.5 +/-    0.61  0.180 / 0.170
G16     290.3          15.3                8.1 +/-    2.36      20.1 +/-    2.36  0.290 / 0.170
G20     278.3          54.5                9.4 +/-    3.24      11.3 +/-    3.24  0.040 / 0.030
G21     340.1          63.1                8.4 +/-    0.87       9.3 +/-    0.87  0.040 / 0.030
G26     263.3          13.3                8.9 +/-    3.47      23.0 +/-    3.47  0.160 / 0.350
G29     165.0          44.3                9.5 +/-    1.11      12.9 +/-    1.11  0.190 / 0.300