PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-21:12:50
G01     52.6           27.1               10.4 +/-    1.24      19.4 +/-    1.24  0.080 / 0.360
G06     178.0          22.7               16.7 +/-    1.74      34.5 +/-    1.74  0.140 / 0.350
G07     145.4          15.5               14.7 +/-    1.97      36.0 +/-    1.97  0.100 / 0.120
G11     45.8           18.6                8.5 +/-    1.10      19.4 +/-    1.10  0.090 / 0.130
G13     253.9          31.9               14.3 +/-    1.62      24.1 +/-    1.62  0.090 / 0.150
G15     286.6          16.0               10.4 +/-    3.14      25.2 +/-    3.14  0.170 / 0.150
G17     280.9          76.7               14.6 +/-    0.45      15.0 +/-    0.45  0.040 / 0.040
G19     241.9          56.4               15.0 +/-    1.01      17.6 +/-    1.01  0.030 / 0.060
G28     48.6           53.8               12.0 +/-    0.79      14.5 +/-    0.79  0.070 / 0.240
G30     148.0          43.0               15.1 +/-    1.26      20.9 +/-    1.26  0.070 / 0.240