PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-19:58:00
G01     48.5           24.3               10.5 +/-    2.10      20.9 +/-    2.10  0.160 / 0.410
G06     176.6          28.0               16.3 +/-    2.30      29.9 +/-    2.30  0.130 / 0.320
G07     147.0          10.9               17.4 +/-    1.74      47.5 +/-    1.74  0.160 / 0.240
G11     44.4           14.0                9.6 +/-    2.02      24.5 +/-    2.02  0.170 / 0.360
G13     248.5          29.2               14.5 +/-    1.74      25.9 +/-    1.74  0.070 / 0.080
G15     282.4          15.2               11.0 +/-    2.00      27.2 +/-    2.00  0.070 / 0.080
G17     310.4          77.6               13.9 +/-    0.42      14.2 +/-    0.42  0.070 / 0.090
G19     249.2          60.0               14.5 +/-    0.66      16.4 +/-    0.66  0.060 / 0.140
G28     55.9           51.9               12.6 +/-    0.99      15.5 +/-    0.99  0.090 / 0.150
G30     150.5          38.6               15.0 +/-    1.82      22.3 +/-    1.82  0.070 / 0.110