PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-14:57:40
G02     223.8          63.9                9.6 +/-    0.94      10.6 +/-    0.94  0.080 / 0.100
G06     45.8           66.9               10.2 +/-    0.55      11.0 +/-    0.55  0.060 / 0.080
G12     320.0          42.4                8.1 +/-    0.47      11.3 +/-    0.47  0.050 / 0.080
G17     61.0           30.4                9.7 +/-    1.03      16.9 +/-    1.03  0.060 / 0.080
G19     48.3           43.1                9.3 +/-    1.36      12.9 +/-    1.36  0.070 / 0.060
G24     257.4          39.0               10.0 +/-    2.26      14.7 +/-    2.26  0.050 / 0.060
G28     125.4          14.4               10.8 +/-    4.13      27.3 +/-    4.13  0.050 / 0.040