PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/26-21:58:00
G01     45.4           21.5               10.5 +/-    1.15      22.2 +/-    1.15  0.110 / 0.180
G06     176.2          31.9               17.2 +/-    2.25      28.9 +/-    2.25  0.090 / 0.250
G11     43.9           11.0                9.6 +/-    2.01      26.2 +/-    2.01  0.060 / 0.140
G13     244.5          26.6               17.9 +/-    2.60      33.7 +/-    2.60  0.060 / 0.160
G15     277.6          14.4               13.2 +/-    1.20      33.3 +/-    1.20  0.160 / 0.300
G17     323.3          76.3               13.6 +/-    1.03      13.9 +/-    1.03  0.130 / 0.270
G19     257.9          63.9               13.3 +/-    0.80      14.6 +/-    0.80  0.180 / 0.600
G24     318.4          13.3                9.9 +/-    1.20      25.6 +/-    1.20  0.130 / 0.490
G28     62.3           50.0               12.9 +/-    0.99      16.3 +/-    0.99  0.050 / 0.090
G30     151.9          33.4               16.9 +/-    1.65      27.6 +/-    1.65  0.050 / 0.080