PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-14:27:50
G01     258.9          39.1                7.8 +/-    1.91      11.5 +/-    1.91  0.060 / 0.090
G03     316.9          40.6                5.2 +/-    1.07       7.5 +/-    1.07  0.060 / 0.080
G11     241.8          15.2                7.6 +/-    2.65      18.7 +/-    2.65  0.060 / 0.080
G14     53.4           44.3                6.2 +/-    1.58       8.4 +/-    1.58  0.060 / 0.090
G18     222.9          31.9                8.8 +/-    1.79      14.8 +/-    1.79  0.110 / 0.070
G22     310.1          63.5                6.2 +/-    1.01       6.8 +/-    1.01  0.050 / 0.080
G25     43.9           12.3                5.2 +/-    2.20      13.8 +/-    2.20  0.110 / 0.110
G26     146.6          30.4              -20.5 +/-   28.56     -35.5 +/-   28.56  0.060 / 0.120
G31     45.0           68.0                6.7 +/-    0.41       7.1 +/-    0.41  0.080 / 0.090
G32     68.8           30.9                5.9 +/-    1.61      10.2 +/-    1.61  0.080 / 0.110