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               12.7 +/-    1.07      23.9 +/-    1.07  0.130 / 0.400
G06     177.6          23.6               18.7 +/-    0.88      37.9 +/-    0.88  0.140 / 0.400
G07     145.6          14.9               18.2 +/-    3.89      45.3 +/-    3.89  0.050 / 0.060
G11     45.5           17.7               10.2 +/-    1.01      23.7 +/-    1.01  0.040 / 0.070
G13     253.1          31.5               17.9 +/-    1.56      30.4 +/-    1.56  0.030 / 0.050
G15     286.3          15.9               13.4 +/-    1.78      32.8 +/-    1.78  0.030 / 0.060
G17     287.1          77.4               16.4 +/-    0.65      16.8 +/-    0.65  0.140 / 0.200
G19     242.6          56.6               19.1 +/-    0.66      22.3 +/-    0.66  0.160 / 0.270
G28     49.5           53.6               13.9 +/-    0.45      16.8 +/-    0.45  0.090 / 0.270
G30     148.5          42.9               17.0 +/-    2.05      23.6 +/-    2.05  0.090 / 0.260