PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/22-22:27:50
G01     124.2          13.4               13.2 +/-    2.07      34.0 +/-    2.07  0.030 / 0.030
G07     71.9           66.2               11.2 +/-    0.56      12.1 +/-    0.56  0.030 / 0.030
G08     47.4           35.1                9.5 +/-    0.88      15.1 +/-    0.88  0.180 / 0.330
G09     177.8          33.1               11.8 +/-    1.69      19.4 +/-    1.69  0.240 / 0.260
G11     112.7          37.6               12.8 +/-    0.62      19.4 +/-    0.62  0.060 / 0.080
G13     320.0          14.8                9.4 +/-    2.03      23.5 +/-    2.03  0.100 / 0.080
G17     199.3          19.8               12.4 +/-    2.17      27.4 +/-    2.17  0.060 / 0.090
G18     97.0           18.0               11.8 +/-    1.77      27.2 +/-    1.77  0.060 / 0.090
G28     277.1          52.0               12.2 +/-    2.56      15.1 +/-    2.56  0.100 / 0.230
G30     336.4          63.2               10.1 +/-    0.59      11.2 +/-    0.59  0.100 / 0.230