PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/12-14:57:50
G01     123.6          13.5                9.5 +/-    1.90      24.4 +/-    1.90  0.030 / 0.040
G07     74.0           65.5                9.8 +/-    0.68      10.7 +/-    0.68  0.020 / 0.050
G08     48.8           38.0                7.3 +/-    0.46      11.0 +/-    0.46  0.050 / 0.080
G09     178.5          33.9               10.4 +/-    2.07      16.8 +/-    2.07  0.040 / 0.080
G11     113.9          37.9               10.6 +/-    0.75      16.0 +/-    0.75  0.050 / 0.110
G13     319.8          15.3                6.9 +/-    2.21      17.0 +/-    2.21  0.050 / 0.110
G17     200.3          16.8               11.9 +/-    1.44      28.3 +/-    1.44  0.190 / 0.410
G18     99.1           18.2                9.7 +/-    1.66      22.3 +/-    1.66  0.180 / 0.430
G28     275.1          50.5                9.6 +/-    1.02      12.1 +/-    1.02  0.060 / 0.160
G30     342.4          66.0                7.8 +/-    0.73       8.4 +/-    0.73  0.060 / 0.190