PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-15:27:40
G01     48.4           24.1                9.7 +/-    1.33      19.3 +/-    1.33  0.050 / 0.060
G06     176.9          25.9               14.0 +/-    1.70      26.8 +/-    1.70  0.040 / 0.060
G11     44.3           14.5                8.5 +/-    2.14      21.4 +/-    2.14  0.140 / 0.320
G13     248.0          30.4               12.7 +/-    1.48      22.1 +/-    1.48  0.110 / 0.400
G15     282.3          15.5               10.0 +/-    1.36      24.5 +/-    1.36  0.030 / 0.030
G17     304.6          78.1               12.8 +/-    0.72      13.1 +/-    0.72  0.020 / 0.020
G19     248.4          62.2               11.9 +/-    0.54      13.3 +/-    0.54  0.050 / 0.050
G28     45.6           56.1               12.3 +/-    0.37      14.5 +/-    0.37  0.040 / 0.040
G30     149.9          38.9               11.4 +/-    0.86      16.9 +/-    0.86  0.170 / 0.320