PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-19:42:50
G01     80.5           32.8               26.4 +/-    1.00      43.7 +/-    1.00  0.060 / 0.050
G07     132.0          32.4               14.8 +/-    0.85      24.6 +/-    0.85  0.050 / 0.050
G11     59.3           35.6               12.3 +/-    1.21      19.3 +/-    1.21  0.050 / 0.090
G13     284.6          38.4               17.2 +/-    2.51      25.6 +/-    2.51  0.060 / 0.080
G15     309.0          13.4                9.9 +/-    3.05      25.6 +/-    3.05  0.040 / 0.030
G17     220.3          61.7               15.5 +/-    1.50      17.4 +/-    1.50  0.040 / 0.030
G18     54.4           20.6               10.5 +/-    4.03      22.6 +/-    4.03  0.060 / 0.100
G19     217.8          34.5               16.2 +/-    1.65      25.9 +/-    1.65  0.060 / 0.080
G28     354.2          61.5               12.3 +/-    0.61      13.8 +/-    0.61  0.150 / 0.250
G30     124.6          68.0               14.7 +/-    0.71      15.7 +/-    0.71  0.140 / 0.180