PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-19:13:10
G01     125.6          12.9               14.7 +/-    2.38      38.4 +/-    2.38  0.040 / 0.060
G07     57.0           69.5               12.8 +/-    0.64      13.6 +/-    0.64  0.040 / 0.060
G08     51.0           41.4               11.0 +/-    0.80      15.6 +/-    0.80  0.100 / 0.480
G09     178.4          34.6               13.8 +/-    1.54      22.0 +/-    1.54  0.120 / 0.450
G11     118.2          36.0               15.4 +/-    1.06      24.0 +/-    1.06  0.070 / 0.130
G13     320.8          12.8               10.7 +/-    1.30      27.9 +/-    1.30  0.070 / 0.130
G17     201.6          12.9               16.4 +/-    1.36      42.9 +/-    1.36  0.040 / 0.070
G18     102.6          17.5               13.3 +/-    1.07      31.2 +/-    1.07  0.040 / 0.060
G28     279.8          54.1               14.1 +/-    0.96      16.9 +/-    0.96  0.030 / 0.040
G30     337.8          63.3               11.4 +/-    0.70      12.6 +/-    0.70  0.030 / 0.040