PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-15:28:00
G01     94.3           30.0               10.5 +/-    1.36      18.3 +/-    1.36  0.040 / 0.070
G07     122.2          44.5               12.5 +/-    0.65      17.0 +/-    0.65  0.040 / 0.070
G08     41.9           12.5                6.4 +/-    1.67      17.0 +/-    1.67  0.050 / 0.070
G11     73.0           41.8               10.8 +/-    0.40      15.3 +/-    0.40  0.050 / 0.060
G13     298.7          35.5               11.3 +/-    1.53      17.7 +/-    1.53  0.040 / 0.080
G17     210.9          47.2               13.1 +/-    0.68      17.1 +/-    0.68  0.040 / 0.090
G18     67.0           24.1                8.8 +/-    0.61      17.5 +/-    0.61  0.070 / 0.120
G19     211.9          24.1               13.3 +/-    2.53      26.5 +/-    2.53  0.060 / 0.120
G28     328.2          61.0                9.5 +/-    0.92      10.7 +/-    0.92  0.040 / 0.070
G30     94.5           76.5               11.5 +/-    1.13      11.8 +/-    1.13  0.040 / 0.070