PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-20:58:10
G01     125.2          12.6               13.6 +/-    2.78      35.8 +/-    2.78  0.030 / 0.030
G07     69.9           66.2               14.7 +/-    0.57      15.9 +/-    0.57  0.030 / 0.030
G08     48.4           36.6               12.5 +/-    1.14      19.3 +/-    1.14  0.270 / 0.330
G09     178.3          35.0               14.2 +/-    1.02      22.5 +/-    1.02  0.180 / 0.330
G11     114.4          36.9               15.0 +/-    0.72      23.0 +/-    0.72  0.120 / 0.380
G13     320.4          13.8               10.1 +/-    2.63      25.9 +/-    2.63  0.120 / 0.300
G17     199.2          18.0               12.9 +/-    1.53      29.7 +/-    1.53  0.060 / 0.090
G18     98.9           17.4               12.6 +/-    0.85      29.6 +/-    0.85  0.050 / 0.080
G28     274.6          51.0               14.7 +/-    3.64      18.3 +/-    3.64  0.030 / 0.030
G30     335.6          62.5               14.2 +/-    0.48      15.8 +/-    0.48  0.040 / 0.030