PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-20:28:10
G07     58.9           67.4               11.7 +/-    0.90      12.5 +/-    0.90  0.040 / 0.040
G08     51.5           40.0               10.6 +/-    1.28      15.5 +/-    1.28  0.030 / 0.030
G09     178.9          39.6               13.4 +/-    1.05      19.6 +/-    1.05  0.060 / 0.080
G11     119.1          34.6               13.9 +/-    0.88      22.3 +/-    0.88  0.060 / 0.070
G17     198.7          13.7               14.6 +/-    4.25      37.5 +/-    4.25  0.290 / 0.300
G18     103.0          15.4               13.0 +/-    1.05      32.0 +/-    1.05  0.200 / 0.240
G23     161.0          10.8               14.3 +/-    3.28      39.1 +/-    3.28  0.090 / 0.110
G27     38.0           11.0               10.1 +/-    3.27      27.5 +/-    3.27  0.120 / 0.110
G28     268.5          48.5               12.1 +/-    2.88      15.5 +/-    2.88  0.030 / 0.040
G30     330.7          59.1               11.0 +/-    0.51      12.5 +/-    0.51  0.030 / 0.040