PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-18:13:00
G01     125.5          13.0               15.2 +/-    2.20      39.5 +/-    2.20  0.050 / 0.060
G07     57.6           69.5               14.4 +/-    0.50      15.3 +/-    0.50  0.050 / 0.070
G08     50.4           40.5               11.7 +/-    0.92      16.8 +/-    0.92  0.200 / 0.310
G09     178.2          34.2               16.8 +/-    1.11      27.1 +/-    1.11  0.230 / 0.300
G11     117.5          36.2               15.0 +/-    0.85      23.3 +/-    0.85  0.030 / 0.030
G13     320.7          13.1               11.4 +/-    4.05      29.8 +/-    4.05  0.040 / 0.040
G17     201.4          13.8               13.9 +/-    3.81      35.6 +/-    3.81  0.100 / 0.210
G18     102.3          17.6               12.9 +/-    1.69      30.1 +/-    1.69  0.090 / 0.240
G28     279.9          54.1               13.8 +/-    2.88      16.6 +/-    2.88  0.110 / 0.100
G30     337.2          63.1               14.1 +/-    0.41      15.6 +/-    0.41  0.090 / 0.100