PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-20:12:50
G01     124.1          13.5               16.3 +/-    1.85      41.9 +/-    1.85  0.030 / 0.030
G07     74.2           65.4               13.2 +/-    0.31      14.3 +/-    0.31  0.030 / 0.040
G08     47.6           35.7               10.7 +/-    1.06      16.7 +/-    1.06  0.120 / 0.330
G09     178.3          33.7               15.9 +/-    0.91      25.9 +/-    0.91  0.130 / 0.320
G11     112.9          37.7               15.1 +/-    1.00      22.8 +/-    1.00  0.120 / 0.100
G13     319.9          15.0               11.9 +/-    1.91      29.6 +/-    1.91  0.090 / 0.090
G17     199.5          19.1               16.1 +/-    1.80      36.2 +/-    1.80  0.110 / 0.080
G18     97.8           18.0               13.9 +/-    1.20      32.0 +/-    1.20  0.090 / 0.070
G28     276.5          51.6               14.4 +/-    2.59      17.8 +/-    2.59  0.030 / 0.040
G30     338.0          64.0               12.5 +/-    0.83      13.8 +/-    0.83  0.030 / 0.030