PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-19:12:50
G01     123.0          15.0               15.7 +/-    2.31      39.1 +/-    2.31  0.040 / 0.060
G07     66.7           68.7               12.4 +/-    0.45      13.2 +/-    0.45  0.040 / 0.070
G08     48.6           38.7               10.2 +/-    0.63      15.2 +/-    0.63  0.160 / 0.330
G09     178.0          31.2               13.7 +/-    2.61      23.4 +/-    2.61  0.120 / 0.270
G11     114.4          37.7               15.4 +/-    0.69      23.2 +/-    0.69  0.030 / 0.040
G13     319.7          15.4               10.1 +/-    2.28      24.9 +/-    2.28  0.030 / 0.040
G17     202.1          16.1               16.0 +/-    1.00      38.8 +/-    1.00  0.060 / 0.110
G18     99.5           18.9               13.7 +/-    1.23      30.9 +/-    1.23  0.060 / 0.100
G28     285.1          55.6               13.8 +/-    0.73      16.3 +/-    0.73  0.040 / 0.070
G30     342.3          65.9               11.2 +/-    0.44      12.2 +/-    0.44  0.050 / 0.070