PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-20:58:00
G01     45.0           21.1               11.4 +/-    0.67      24.4 +/-    0.67  0.070 / 0.220
G06     175.8          32.8               23.8 +/-    1.23      39.3 +/-    1.23  0.080 / 0.220
G13     243.8          26.3               22.1 +/-    2.49      42.0 +/-    2.49  0.050 / 0.080
G15     277.4          14.2               15.7 +/-    1.20      39.8 +/-    1.20  0.040 / 0.060
G17     329.7          76.0               17.3 +/-    0.45      17.8 +/-    0.45  0.060 / 0.150
G19     258.8          64.0               17.0 +/-    0.84      18.7 +/-    0.84  0.060 / 0.150
G24     318.2          14.0               11.3 +/-    2.05      28.7 +/-    2.05  0.140 / 0.270
G28     63.0           49.8               15.7 +/-    0.84      19.8 +/-    0.84  0.130 / 0.340
G30     152.3          33.2               21.3 +/-    1.90      34.9 +/-    1.90  0.060 / 0.090