PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-23:58:00
G01     39.2           13.1                7.2 +/-    1.31      18.8 +/-    1.31  0.080 / 0.140
G02     198.9          13.6               14.3 +/-    4.12      36.8 +/-    4.12  0.100 / 0.160
G06     174.2          43.8               15.4 +/-    1.34      21.2 +/-    1.34  0.040 / 0.070
G13     234.5          19.1               15.7 +/-    1.58      35.3 +/-    1.58  0.050 / 0.060
G15     266.6          10.8               10.8 +/-    1.14      29.6 +/-    1.14  0.080 / 0.420
G17     0.4            69.4               11.9 +/-    0.66      12.6 +/-    0.66  0.100 / 0.390
G19     290.5          70.4               12.1 +/-    0.64      12.8 +/-    0.64  0.030 / 0.050
G24     315.0          22.6                6.2 +/-    0.93      12.9 +/-    0.93  0.030 / 0.030
G28     77.8           44.2               11.7 +/-    0.72      15.9 +/-    0.72  0.040 / 0.060
G30     155.0          21.1               13.8 +/-    1.65      29.6 +/-    1.65  0.050 / 0.070