PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-20:12:50
G01     52.0           26.8               11.5 +/-    2.12      21.7 +/-    2.12  0.120 / 0.200
G06     177.6          23.6               16.5 +/-    1.68      33.4 +/-    1.68  0.080 / 0.180
G07     145.6          14.9               17.8 +/-    4.06      44.3 +/-    4.06  0.160 / 0.390
G11     45.5           17.7               11.8 +/-    2.22      27.5 +/-    2.22  0.140 / 0.460
G13     253.1          31.5               17.2 +/-    2.81      29.1 +/-    2.81  0.040 / 0.060
G15     286.3          15.9               15.0 +/-    0.81      36.6 +/-    0.81  0.050 / 0.050
G17     287.1          77.4               16.7 +/-    0.63      17.1 +/-    0.63  0.100 / 0.200
G19     242.6          56.6               17.9 +/-    2.05      21.0 +/-    2.05  0.080 / 0.190
G28     49.5           53.6               15.0 +/-    0.80      18.2 +/-    0.80  0.030 / 0.060
G30     148.5          42.9               16.1 +/-    0.68      22.4 +/-    0.68  0.040 / 0.050