PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-09:12:50
G01     78.9           32.3                4.9 +/-    1.18       8.2 +/-    1.18  0.050 / 0.070
G07     131.7          37.0                6.0 +/-    0.98       9.2 +/-    0.98  0.040 / 0.070
G11     61.1           38.0                5.0 +/-    1.20       7.5 +/-    1.20  0.050 / 0.110
G13     283.8          38.9               -0.6 +/-    3.84      -0.9 +/-    3.84  0.060 / 0.100
G15     309.5          12.9                3.0 +/-    2.18       8.0 +/-    2.18  0.130 / 0.110
G17     220.1          59.5                6.2 +/-    1.65       7.1 +/-    1.65  0.090 / 0.110
G18     55.4           21.5                4.4 +/-    2.92       9.3 +/-    2.92  0.220 / 0.230
G19     217.5          36.4                5.7 +/-    1.25       8.8 +/-    1.25  0.210 / 0.260
G28     348.3          61.5                3.3 +/-    0.94       3.7 +/-    0.94  0.030 / 0.020
G30     123.5          71.9                5.7 +/-    0.43       5.9 +/-    0.43  0.030 / 0.020